Home / 38,990.90-58,490.93-13,682.69

Finding the Fourth Proportional to 38,990.90, 58,490.93 and 13,682.69

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Solution

The fourth proportional to 38,990.90, 58,490.93 and 13,682.69 is: 20,525.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,990.90 : 58,490.93 = 13,682.69 : x
  2. Step 2: Convert to fraction form
    38,990.90/58,490.93 = 13,682.69/x
  3. Step 3: Cross multiply
    38,990.90x = 58,490.93 × 13,682.69
  4. Step 4: Simplify right side
    38,990.90x = 800,313,048.36
  5. Step 5: Solve for x
    x = 800,313,048.36/38,990.90
  6. Step 6: Final answer
    x = 20,525.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.